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<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
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    <title>404 Page</title>

    <link rel="stylesheet" type="text/css" th:href="@{/css/404.css}">
</head>
<body>
<h1>404</h1>
<h3>Page Not Found - 找不到你要访问的资源</h3>
<div class="frame">
    <button class="custom-btn btn-4" onclick="javascrpit:history.back(-1)"><span>返回上级页面</span></button>
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